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Finding the Fourth Proportional to 501,398.75, 691,930.41 and 275,044.25

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Solution

The fourth proportional to 501,398.75, 691,930.41 and 275,044.25 is: 379,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,398.75 : 691,930.41 = 275,044.25 : x
  2. Step 2: Convert to fraction form
    501,398.75/691,930.41 = 275,044.25/x
  3. Step 3: Cross multiply
    501,398.75x = 691,930.41 × 275,044.25
  4. Step 4: Simplify right side
    501,398.75x = 190,311,480,670.64
  5. Step 5: Solve for x
    x = 190,311,480,670.64/501,398.75
  6. Step 6: Final answer
    x = 379,561.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.